On Thu, May 10, 2012 at 10:45:08AM +0100, Mark Brown wrote:
> On Thu, May 10, 2012 at 05:41:15PM +0800, Shawn Guo wrote:
>> > The "Mic Bias" here is really a SGTL5000 internal supply.
>> If it is then what's providing the bias to the mic? It's common for
> chips to have a micbias supply which comes out of the chip and is used
> by mics, this is my understanding of what this circuit is.
I did not make myself clear, but you made :) Yes, this is exactly the
thing on my mind, and the circuit will look like:
STGTL5000 BOARD
|
MIC_IN ---+--- JACK
^ | ^
| | |
| | |
MIC_BAIS----+-----/
|
Isn't you helped me create this understanding? [1]
Regards,
Shawn
[1] http://article.gmane.org/gmane.linux.alsa.devel/96351